CVE-2026-99223LowLocalRevised 7 Nov

keys: make keyring indexes independent of kernel addresses

MSRC advisory NVD CVE.org

Assessment

Severity: Low
CVSS base score: 3.3
Impact: Not stated
Exploitation detected: Unknown: not stated by MSRC
Exploitability: Not assessed
Publicly disclosed: Unknown: not stated by MSRC
EPSS · 30-day forecast: No EPSS score collected
Customer action: Required: follow the MSRC remediation guidance

More details

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Public detection template: No Nuclei template is listed in the current collected catalog
Component: Mariner
Weakness: —
Issued by: Linux
Published: 4 Nov 2026 · November 2026
Last revised: 7 Nov 2026Information published.

CVSS 3.1 base metricsRed raises the risk · green lowers it

Attack vector: LocalAV:L
Attack complexity: LowAC:L
Privileges required: LowPR:L
User interaction: NoneUI:N
Scope: UnchangedS:U
Confidentiality: LowC:L
Integrity: NoneI:N
Availability: NoneA:N

Updates that fix it

0 KBs

No KB listed

No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.

Affected products

Open Source Software

1 affected product

azl3 kernel 6.6.159.1-1 on Azure Linux 3.0

What changed

Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
6 Nov 2026 · 17:32:22 UTC
Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
6 Nov 2026 · 16:31:02 UTC

Page history

Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.

Cite this version

Field-level log (10)

Up to 100 recent field edits are shown; older edits may be outside retention.

7 Nov 2026 · 08:59:22 UTC Last revised5 Nov 2026 14:52 UTC → 7 Nov 2026 01:51 UTC
6 Nov 2026 · 17:32:22 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
6 Nov 2026 · 17:32:22 UTC Source coverage: public-exploit-codeIncomplete → Current
6 Nov 2026 · 17:32:22 UTC Source coverage: first-epssIncomplete → Current
6 Nov 2026 · 17:32:22 UTC Source coverage: msrc-cvrfIncomplete → Current
6 Nov 2026 · 16:31:02 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
6 Nov 2026 · 16:31:02 UTC Source coverage: public-exploit-codeCurrent → Incomplete
6 Nov 2026 · 16:31:02 UTC Source coverage: first-epssCurrent → Incomplete
6 Nov 2026 · 16:31:02 UTC Source coverage: msrc-cvrfCurrent → Incomplete
6 Nov 2026 · 08:04:49 UTC Last revised4 Nov 2026 01:01 UTC → 5 Nov 2026 14:52 UTC

Explore global source statements, affected packages and advisory history for CVE-2026-99223. The catalog has a separate collection scope from Microsoft release records.

cve-program · CVE-2026-99223

Published

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/linux/key-type.h",
                        "include/linux/key.h",
                        "security/keys/keyring.c"
                    ],
                    "versions": [
                        {
                            "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
                            "lessThan": "9ebe824d55983c9f063a2c9ef1a08b29812d406f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
                            "lessThan": "e108b22999edbc6f431466baf6b2016c19b7ed31",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
                            "lessThan": "9f084ef0beb68091e96ab96f0e95579aac8a77f9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
                            "lessThan": "8451d4a4c43127c3b9fdf9fc9ff3fea5539a61f9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
                            "lessThan": "13fc051269d670810d9e314061b61c6dd06116a0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
                            "lessThan": "61ac0585d9f4344d3dfb84b5edff1fee7d532897",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
                            "lessThan": "84f7c699f8d139f743c7dc11ef41d085690955bb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
                            "lessThan": "a113eba06bd1183c614d7994864d6e7054140cb9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69",
                            "lessThan": "de891c73c1cf41ac8de12c07fa2c84d6a912ad0c",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/linux/key-type.h",
                        "include/linux/key.h",
                        "security/keys/keyring.c"
                    ],
                    "versions": [
                        {
                            "version": "3.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.273",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.224",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.191",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.161",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.115",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.60",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.14",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3.1",
                            "lessThanOrEqual": "7.3.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.4-rc1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON